VIBHA OJHA, RAVINDER SINGH. Pretty Good Privacy: An e-mail Security Protocol. International Journal on Future Revolution in Computer Science & Communication Engineering, [S. l.], v. 5, n. 5, p. 80–83, 2019. Disponível em: http://www.ijfrcsce.org/index.php/ijfrcsce/article/view/1970. Acesso em: 11 apr. 2026.